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A 70 kg hiker climbs to the top of a 4300 m -high mountain. The climb is made in 5.5 h starting at an elevation of 2800 m .
Calculate the work done by the hiker against gravity.
Calculate the average power output in watts.
Calculate assuming the body is 16 % efficient, what rate of energy input was required.
Calculate the average power output in horsepower.
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